You could sell small vegetable plants? Let people build small gardens so they can sustain themselves? or a little grocery. There are actually a lot of options and yes giving jobs to submissives would be beneficial. Although you'd have to double check you wouldn't get in trouble for it?

Be the change you want to see and all that.

[He comes over and hands her, her communicator back. He's put this contact in as 'Timothy Drake-Wayne with the username of gothamneonnights]